What is the current water temperature in Holyhead?

Q: What is the current water temperature in Holyhead?

As of now, in Holyhead, the water temperature is 12.92°C. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration.

United Kingdom > Holyhead

Water temperature in Holyhead

Detailed information about the current water temperature in Holyhead. The trend over the last two weeks, daily averages, and precise forecast of the water temperature changes. Gain a deeper understanding of seasonal dynamics with monthly statistical analyses covering recent years.

55.3

°F

November 12, 17:45

Trend:

decreasing

Yesterday:

55.6°F

Tomorrow:

55.1°F

Sunrise:

07:37

Sunset:

16:27

Day Length:

8 h. 50 min.

Holyhead in November

Minimum:

47.7°F

Average:

48.7°F

Maximum:

50.3°F

Sea water temperature in Holyhead today

As of now, in Holyhead, the water temperature is 55.3°F. Swimming in water of this temperature is considered as extremely cold, and there's a substantial risk of hypothermia if exposed for more than a brief duration. Today's reading is about the same as the average recorded on this particular day in recent years. The sea temperature remains approximately unchanged from yesterday. According to the forecast, we expect the temperature to fall a bit.

Recent sea temperature and forecast

Today's water temperature is slightly lower than the average registered over the last two weeks, indicating a slight cooling trend. It also falls within the range of the average temperature recorded for this date, suggesting a consistent weather trend. The maximum temperature recorded for this date was 56.4°F on 2015, while the historical minimum was 54.5°F on 2018.

latest data

last year

Over the past two weeks, the water temperature has closely aligned with historical averages for those days. The forecast for the upcoming week shows a gradual cooling trend. The average temperature is expected to be 54.7°F, the minimum temperature may reach 54.4°F, and the maximum might stay at 55.1°F.

Daily water temperature in Holyhead

Date	Current Year actual* / forecast**	last year	10 years average
Oct 29	57.0°F	56.6°F	56.9°F
Oct 30	56.7°F	56.4°F	56.8°F
Oct 31	56.5°F	56.3°F	56.5°F
Nov 1	56.3°F	56.1°F	56.4°F
Nov 2	55.8°F	55.9°F	56.4°F
Nov 3	55.6°F	55.9°F	56.2°F
Nov 4	55.6°F	55.7°F	56.1°F
Nov 5	55.5°F	55.7°F	56.1°F
Nov 6	55.5°F	55.5°F	55.8°F
Nov 7	55.6°F	56.2°F	55.8°F
Nov 8	55.7°F	56.5°F	55.9°F
Nov 9	55.7°F	56.4°F	55.8°F
Nov 10	56.0°F	56.2°F	55.6°F
Nov 11	55.6°F	56.1°F	55.5°F
Nov 12	55.3°F	56.0°F	55.4°F
Nov 13	55.1°F	55.9°F	55.2°F
Nov 14	54.9°F	55.7°F	55.0°F
Nov 15	54.8°F	55.1°F	54.9°F
Nov 16	54.7°F	55.1°F	54.8°F
Nov 17	54.6°F	55.1°F	54.8°F
Nov 18	54.6°F	55.4°F	54.7°F
Nov 19	54.4°F	55.2°F	54.5°F

* actual - actual temperature values

** forecast - projected values for the next week

Real-time coastal temperatures could deviate by several degrees from the provided readings. These deviations often become evident following intense rainfall or strong winds.

Our forecasting methodology leverages a mathematical model, that uses current water and weather conditions, historical records, wind intensity and direction.

Sea water temperature in Holyhead by month

In an average year, Holyhead offers no days when the water temperature is warm enough to swim comfortably.

The warmest water in Holyhead was recorded on August 29, 2025, reaching a 63.3°F. While the coldest temperature occurred on March 9, 2018, dipping to 43.0°F. The average readings by season are 48.6°F in Winter, 48.5°F in Spring, 58.0°F in Summer, and 57.8°F in Autumn.

Popular neighboring cities and resorts

City	Water temperature*	Distance**
Caernarfon	54.9°F	19mi
Bangor	53.7°F	21mi
Conwy	53.6°F	33mi
Douglas	56.1°F	59mi
Aberystwyth	54.0°F	66mi

* current water temperature in this city

** straight line distance from Holyhead